/*
 *      ToDouble.java
 *
 *      Copyright 2008 Pablo Nicolas Diaz Bilotto <pablonicolas.diaz@gmail.com>
 *
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License as published by
 *      the Free Software Foundation; either version 2 of the License, or
 *      (at your option) any later version.
 *
 *      This program is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU General Public License for more details.
 *
 *      You should have received a copy of the GNU General Public License
 *      along with this program; if not, write to the Free Software
 *      Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 *      MA 02110-1301, USA.
 */
package ilanguage.iltokens.operations.arimethic;

import lexer.EntryType;
import i386CodeGenerator.RegisterAssigner;
import ilanguage.iltokens.IL_SSA;
import ilanguage.iltokens.operations.Operations;

/**
 * The Class ToDouble.
 */
public class ToDouble extends CasterILToken {

	/**
	 * Instantiates a new to double.
	 *
	 * @param firstToken
	 *            the first token
	 */
	public ToDouble(IL_SSA firstToken) {
		super(firstToken);
	}

	/*
	 * (non-Javadoc)
	 *
	 * @see ilanguage.iltokens.SequenciableToken#GenerateCodeMachine()
	 */
	@Override
	public String GenerateCode() {
		String codigo = "";
		String firstArg = this.getFirstArg().getResultRegister();

		codigo += "\t; Comienzo de conversion a Double\n";

		if (firstArg.startsWith("_")) {
			codigo += "\t\tfild " + firstArg + "\n";
		} else {
			codigo += "\t\tmov varauxInt , " + firstArg + "\n";
			codigo += "\t\tfild varauxInt \n";
		}
		RegisterAssigner.getInstance().liberarRegistro(firstArg);
		this.setResultRegister("FPU");
		codigo += "\t; Fin de conversion a Double\n\n";
		return codigo;
	}

	/*
	 * (non-Javadoc)
	 *
	 * @see ilanguage.iltokens.operations.OperationToken#getOperationName()
	 */
	public String getOperationName() {
		return Operations.CAST_TODOUBLE.toString();
	}
	@Override
	public EntryType solveTypes() {
		return EntryType.Casting(getFirstArg().solveTypes(),EntryType.DOUBLE);
	}

}
